The two ways the endocrine system and the nervous system are different in communication, is that the nervous system responds rapidly to short-term changes in the body by sending electrical impulses. And with the endocrine system, it takes longer, so it's a long-term effect until it notices any changes and when it does, it sends chemical messengers known as hormones into the body.
Now, how they are similar, is because both the nervous and endocrine systems work together to maintain homeostasis.
When sound waves hit a solid surface they either reflect, refract, or absorb.
Echo's are caused by the reflection of sound waves.
Correct answer is B!
--------------------------------
If you see meaning of "Unconditioned stimulus", you will see the right answer, firstly what does "Unconditioned Stimulus" means, it means any stimulus that naturally evokes a specific response; see also conditioning. If I would go with choices I would choose correct answer B.
--------------------------------
<em>Hope this helps!</em>
<em />
<u>Brainliest would be great!</u>
<u />
--------------------------------
I COULD BE WRONG, IF I'M PLEASE CORRECT ME!
--------------------------------
<em><u /></em>
<em><u>With all care,</u></em>
<em><u>07x12!</u></em>
Answer is option C tertiary structure ....hydrogen bonds
